CN102398188A - Hollow ball-screw gas-liquid binary cooling system - Google Patents
Hollow ball-screw gas-liquid binary cooling system Download PDFInfo
- Publication number
- CN102398188A CN102398188A CN2011101511689A CN201110151168A CN102398188A CN 102398188 A CN102398188 A CN 102398188A CN 2011101511689 A CN2011101511689 A CN 2011101511689A CN 201110151168 A CN201110151168 A CN 201110151168A CN 102398188 A CN102398188 A CN 102398188A
- Authority
- CN
- China
- Prior art keywords
- air
- screw
- hollow ball
- oil
- air cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Transmission Devices (AREA)
Abstract
The invention relates to a hollow ball-screw gas-liquid binary cooling system. The lower end face of an air generator (17) is in an oval hollow annular horn shape, the section of an air inlet is larger that that of an air outlet, the air generator (17) is internally provided with a fan (39) and an impeller (38) driven by the fan (39), the wall of an air cavity (40) for accepting lead-in air is provided with an air inlet hole (37), the wall of an annular air cavity (42) is provided with an air inlet (41), the annular air cavity (42) is provided with an exhausting crevice (44), a Coanda surface (45) is arranged at one side of the exhausting crevice (44), the wall of a central air cavity (34) is provided with an air nozzle (43), and the air injection direction of the air nozzle (43) is directed to a friction surface of a screwpair; and an oil outlet (55) of a frequency-conversion refrigerating system is connected with an oil inlet pipe (9) of a hollow ball-screw (13), an oil inlet (56) of the frequency-conversion refrigerating system is connected with an oil outlet pipe (26) of the hollow ball-screw (13), and cooling oil is transmitted through the hollow ball-screw (13).
Description
Technical field
The present invention relates to the cooling system of Digit Control Machine Tool.
Background technology
At present, in the high-speed machine tool evolution, though the linear motor driving feed system occurred, high speed ball screw assembly, transmission system remains the principal mode of high-speed machine tool feed drive system.Along with Digit Control Machine Tool develops to high speed, the temperature rising has appearred in ball screw assembly,, and noise increases, degradation phenomenon under the positioning accuracy.Various dissimilar lathes, thermal deformation errors accounts for 30%～50% of overall error.In the machine tool feed system, produce the frictional heat of frictional heat and spring bearing between ball screw assembly, and the nut, and then produce thermal deformation, because leading screw rotates at a high speed, thermal deformation will be more serious, even in thermal deformation of machine tool, occupy an leading position sometimes.
In high speed ball screw assembly, transmission system, contact area (feed screw nut, bearing etc.) produces a large amount of heat, causes leading screw generation thermal deformation errors and influences machine finish and the reduction of feed system transmission stiffness.The problems such as leading screw heating that the solution high acceleration causes are to improve the key of lathe transmission stiffness and motion quality; Add (subtracting) speed characteristics for what improve ball screw assembly; Raising is to the quick follow-up control of movement instruction; Must improve the system stiffness of ballscrew shaft system and the axial rigidity of lead screw pair, reduce starting and stop immediate elastic deformation.In order to solve the heating problem of leading screw, the way that generally adopts at present is cooling fluid to be fed hollow leading screw is inner to carry out forced circulation with the bearing block end and cool off.The heat that the method for this full leading screw cooling has rubbed and caused between to a certain degree having reduced owing to leading screw and pair of nut; But in practical work process; Screw pair is not on whole leading screw, to carry out fricting movement; And frequent relatively in some regional area motion often, the heat of generation is also more relatively.Leading screw is carried out the cooling of full leading screw, can only the whole average temperature rising that reduces leading screw, can not control the frequent relatively local temperature rise that produces of friction of motion.
Summary of the invention
The object of the present invention is to provide a kind of hollow ball-screw gas-liquid binary cooling system.
The present invention is a kind of hollow ball-screw gas-liquid binary cooling system, and left end watt frame 5 is installed on the lathe bed 1, and servomotor 2 is fixed on the end face of left end watt frame 5; And link to each other with the front end of hollow ball-screw 13 through shaft coupling 4, hollow ball-screw 13 front ends are installed on the left end watt frame 5 through bearing group 8 supports, being threaded of the front end of round nut 6 and hollow ball-screw 13; Abut against on the seal 7 of bearing group 8 left ends, ball-screw oilhole 11 is in the centre of two sealing rings 12, links to each other with oil inlet pipe 9 through pipe joint 10; Pipe joint 25 1 ends link to each other with taper thread on the shaft end seal spare 24, and the other end links to each other with flowline 26, and air generator 17 is made up of blower fan 39, impeller 38, convex edge 33, upper lip wall 35, lower lip wall 36 and air nozzle 43; The lower surface ovalize hollow ring of air generator 17 is horn-like; The air inlet section is bigger than gas outlet section, and air generator 17 inside are equipped with blower fan 39, by the impeller 38 of blower fan 39 drivings; On the chamber wall of admitting the air cavity 40 that imports air, offer air admission hole 37; On the wall of the chamber of annular air cavity 42, offer air inlet 41, on annular air cavity 42, offer exhaust finedraw 44, Koln reaches surface 45 and is installed in exhaust finedraw 44 1 sides; On the wall of the chamber of central air cavity 34, offer air nozzle 43, the jet direction of air nozzle 43 is pointed to the screw pair friction surface; Frequency changing refrigeration system is made up of refrigeration machine 46, condenser 48, radiator 49, thermometer 47, fuel tank 50, choke valve 51, Pressure gauge 52, control valve 53, oil pump 54 and oil pipe; Frequency changing refrigeration system oil-out 55 links to each other with the oil inlet pipe 9 of hollow ball-screw 13, and the oil-in 56 of frequency changing refrigeration system links to each other with the flowline 26 of hollow ball-screw 13, and cold oil is via hollow ball screw 13 transmission.
Beneficial effect of the present invention is:
1, adopts and cooling medium to be fed hollow leading screw inside carry out the forced circulation cooling; Reduced on the whole because of the fricative average temperature rising of screw pair; Simultaneously; Adopt cooling blast that leading screw emphasis heating region is carried out the heat that the local local frequent movement of screw pair of cooling off the type of cooling reduction that combines produces, thereby effectively solved the heating problem of leading screw.
2, utilize fluid to have and leave original flow direction; The Koln that changes into the mobile tendency of the body surface of work protrusion reaches wall attachment effect; Reach in the effect the definite of flow field in appropriate design that Koln when producing higher air and absorbing ratio reaches surface of internal cavity and the air cooling process through Koln; Form air negative pressure in central lumen, form better air cooling effect.
Rotary inertia when 3, helping to reduce to run up, the torsional rigidity and the axial rigidity of increase leading screw, the positioning accuracy and the stability of assurance machine tool feed.
Description of drawings
Fig. 1 is overall structure figure of the present invention, Fig. 2 be A-A among Fig. 1 to cutaway view, Fig. 3 is the structure chart of air generator 17, Fig. 4 is the side view of air generator 17, Fig. 5 is the partial enlarged drawing of air generator 17, Fig. 6 is the frequency changing refrigeration system structure chart.
Reference numeral and corresponding name are called: lathe bed 1, servomotor 2, bolt 3, shaft coupling 4, left end watt frame 5, round nut 6, seal 7, bearing group 8; Oil inlet pipe 9, pipe joint 10, oilhole 11, sealing ring 12, hollow ball-screw 13, workbench 14, slide block 15, bolt 16; Air generator 17, feed screw nut 18, bolt 19, right-hand member watt frame 20, bearing group 21, seal 22, round nut 23, shaft end seal spare 24; Pipe joint 25, flowline 26, boss 27, wedge shape guide rail briquetting 28, bolt 29, guide rail 30, bolt 31, nut watt frame 32; Convex edge 33, central air cavity 34, upper lip wall 35, lower lip wall 36, air admission hole 37, impeller 38, blower fan 39, air cavity 40; Air inlet 41, annular air cavity 42, air nozzle 43, exhaust finedraw 44, Koln reaches surface 45, refrigeration machine 46, thermometer 47, condenser 48; Radiator 49, fuel tank 50, choke valve 51, Pressure gauge 52, control valve 53, oil pump 54, oil-out 55, oil-in 56.
The specific embodiment
Do further detailed explanation below in conjunction with accompanying drawing the present invention.
As shown in Figure 1, left end watt frame 5 is installed on the lathe bed 1, servomotor 2 is fixed on the end face of left end watt frame 5 through bolt 3, and links to each other with the front end of hollow ball-screw 13 through shaft coupling 4.Hollow ball-screw 13 front ends support through bearing group 8 and are installed on the left end watt frame 5, and round nut 6 is threaded with hollow ball-screw 13 front ends, abuts against on the seal 7 of bearing group 8 left ends, are used for the axial location of hollow ball-screw 13.Ball-screw oilhole 11 is in the middle of two sealing rings 12, links to each other with oil inlet pipe 9 through pipe joint 10.Hollow ball-screw 13 follower heads support through bearing group 21 and are installed on the right-hand member watt frame 20, and bearing group 21 left and right sides are equipped with seal 22.Round nut 23 is threaded with hollow ball-screw 13 follower heads, abuts against on the seal 22 of bearing group 8 right-hand members, is used for preventing axially jumping of hollow ball-screw 13.Hollow ball-screw 13 follower heads are equipped with shaft end seal spare 24,, the taper thread two on pipe joint 25 1 ends and the shaft end seal spare 24 connects, and the other end links to each other with flowline 26.
As shown in Figure 2, lathe bed 1 left and right sides face is provided with boss 27, and guide rail 30 is connected on the boss 27 through bolt 31; One side of the boss 27 of guide rail 30 in axial direction has the wedge shape long recess; Wedge shape guide rail briquetting 28 is installed in the wedge shape long recess, and wedge shape guide rail briquetting 28 is connected with lathe bed 1 through bolt 29, when wedge shape guide rail briquetting 28 sinks to installing; Vertical plane extrusion rolling guide rail side guarantees the linearity that rolling guide 30 is installed.Feed screw nut 18 cooperates with hollow ball-screw 13 forms screw pair, and feed screw nut 18 links to each other with workbench 14 through nut watt frame 32, and feed screw nut 18 end faces are connected with the workbench end face through bolt 19 simultaneously, and it is reliable to guarantee that workbench connects.Workbench 14 two bottom sides are in the face of claiming to install slide block 15, and slide block 15 guide rails 30 cooperate, and move along guide rail 30.Air generator 17 is connected with workbench 14 through bolt 16; Be installed in the two sides of screw pair respectively; When the hollow ball-screw 13 of servomotor 2 drivings moves; Air generator 17 is started working, and produces air stream and sprays to the screw pair friction surface, reduces the heat that screw pair local friction produces.
Like Fig. 3,4, shown in 5, air generator 17 comprises blower fan 39, impeller 38, convex edge 33, upper lip wall 35, lower lip wall 36 and air nozzle 43 etc.Air generator 17 lower surface ovalize hollow rings are horn-like, and the air inlet section is bigger than gas outlet section, are convenient to utilize Koln to reach the absorptivity that effect improves air, strengthen the effect that cools.Air generator 17 inside are equipped with blower fan 39, and 38 rotations of blower fan 39 drives impeller offer air admission hole 37 on the chamber wall of admitting the air cavity 40 that imports air; Air in the surrounding environment is imported air cavity 40 through air admission hole 37; On the wall of the chamber of annular air cavity 42, offer air inlet 41,, in annular air cavity 42, assemble through the annular air cavity 42 of air inlet 41 entering air generators; On annular air cavity 42, offer exhaust finedraw 44; Koln reaches surface 45 and is installed in exhaust finedraw 44 1 sides, on the wall of the chamber of central air cavity 34, offers air nozzle 43, and the jet direction of air nozzle 43 is pointed to the screw pair friction surface; Air reaches surface 45 through air nozzle 43 through exhaust finedraw 44 along Koln, sprays to the screw pair friction surface.Simultaneously; Owing to get into the air of air generator 17 air cavitys 40, produce negative pressure during through exhaust finedraw 44, under suction function, will guide surrounding air in a large number through central air cavity 34; Spray to the screw pair friction surface through air nozzle 43, reach part cooling screw pair.
Like Fig. 1, shown in Figure 6, frequency changing refrigeration system mainly comprises refrigeration machine 46, condenser 48, radiator 49, thermometer 47, fuel tank 50, choke valve 51, Pressure gauge 52, control valve 53, oil pump 54 and oil pipe etc.Frequency changing refrigeration system oil-out 55 links to each other with hollow ball-screw 13 oil inlet pipes 9, and frequency changing refrigeration system oil-in 56 links to each other with hollow ball-screw 13 flowlines 26, through the cold oil of hollow ball screw 13.The frequency converter frequency control drives oil pump 54; Oil pump is quantitatively to hollow ball-screw 13 fuel feeding; Through heat exchange method the heat of ball screw assembly, and bearing block end face is taken away with returning cold oil; Returning-oil temperature raises, and oil return is got back to fuel tank 50 after lowering the temperature through radiator 49, condenser 48 and 46 machines that freeze, and recycles.Importing and exporting cold oil temperature difference increases; Through the control system command frequency converter drive variable frequency motor speed is raise, oil pump 54 output fluid flows, flow velocity increase, and accelerate the fluid cool cycles; Fast heat is taken away, thereby reduced the whole temperature rise of hollow ball-screw 13.Simultaneously, the cooling blast that air generator produces carries out the local gas cooling to hollow ball-screw 13 emphasis heating regions, the heat that the local frequent movement of the screw pair of reduction produces.Thereby; Combine through local cooling of gas and the full leading screw cooling of cold oil; Realized the gas-liquid binary type of cooling of air ball-screw 13, leading screw and the temperature rise of bearing block end face are inhibited, guaranteed that leading screw can thermal expansion not cause rigidity and precision to change.
Claims (1)
1. a hollow ball-screw gas-liquid binary cooling system is equipped with left end watt frame (5) on the lathe bed (1), and servomotor (2) is fixed on the end face of left end watt frame (5); And link to each other with the front end of hollow ball-screw (13) through shaft coupling (4), hollow ball-screw (13) front end is installed on the left end watt frame (5) through bearing group (8) support, being threaded of the front end of round nut (6) and hollow ball-screw (13); Abut against on the seal (7) of bearing group (8) left end; It is characterized in that ball-screw oilhole (11) is in the centre of two sealing rings (12), link to each other with oil inlet pipe (9) that the taper thread two on pipe joint (25) one ends and the shaft end seal spare (24) connects through pipe joint (10); The other end links to each other with flowline (26); Air generator (17) is made up of blower fan (39), impeller (38), convex edge (33), upper lip wall (35), lower lip wall (36) and air nozzle (43), and the lower surface ovalize hollow ring of air generator (17) is horn-like, and the air inlet section is bigger than gas outlet section; Air generator (17) inside is equipped with blower fan (39); Impeller (38) by blower fan (39) drives offers air admission hole (37) on the chamber wall of admitting the air cavity (40) that imports air, on the chamber wall of annular air cavity (42), offer air inlet (41); On annular air cavity (42), offer exhaust finedraw (44); Koln reaches surface (45) and is installed in exhaust finedraw (44) one sides, on the chamber wall of central air cavity (34), offers air nozzle (43), and the jet direction of air nozzle (43) is pointed to the screw pair friction surface; Frequency changing refrigeration system is made up of refrigeration machine (46), condenser (48), radiator (49), thermometer (47), fuel tank (50), choke valve (51), Pressure gauge (52), control valve (53), oil pump (54) and oil pipe; Frequency changing refrigeration system oil-out (55) links to each other with the oil inlet pipe (9) of hollow ball-screw (13), and the oil-in of frequency changing refrigeration system (56) links to each other with the flowline (26) of hollow ball-screw (13), and cold oil transmits via hollow ball screw (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101511689A CN102398188A (en) | 2011-06-01 | 2011-06-01 | Hollow ball-screw gas-liquid binary cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101511689A CN102398188A (en) | 2011-06-01 | 2011-06-01 | Hollow ball-screw gas-liquid binary cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102398188A true CN102398188A (en) | 2012-04-04 |
Family
ID=45881057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101511689A Pending CN102398188A (en) | 2011-06-01 | 2011-06-01 | Hollow ball-screw gas-liquid binary cooling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102398188A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103009170A (en) * | 2012-12-19 | 2013-04-03 | 杭州三拓精密机械有限公司 | Air cooling mechanism for screw rod |
| CN107263205A (en) * | 2017-08-10 | 2017-10-20 | 杭州电子科技大学 | A kind of outer cooling system of machine tool ball screw gas and its installation and cooling means |
| CN107725747A (en) * | 2017-10-13 | 2018-02-23 | 北京工业大学 | A kind of ball screw assembly, based on the compensation thermal deformation of small-sized refrigerator principle |
| CN110315842A (en) * | 2019-06-25 | 2019-10-11 | 北新集团建材股份有限公司 | A kind of galley automatic deviation rectifying device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08118199A (en) * | 1994-10-24 | 1996-05-14 | Makino Milling Mach Co Ltd | Feeder for machine tool |
| JP2000074173A (en) * | 1998-08-27 | 2000-03-07 | Niigata Eng Co Ltd | Feed screw cooling device |
| CN1773146A (en) * | 2004-10-15 | 2006-05-17 | 斗山英维高株式会社 | Cooling device for ball screw assembly |
| JP2006300126A (en) * | 2005-04-18 | 2006-11-02 | Nsk Ltd | Ball screw device and transfer device |
| KR20070068720A (en) * | 2005-12-27 | 2007-07-02 | 두산인프라코어 주식회사 | Ball screw cooling and chip removing device |
| GB2464736A (en) * | 2008-10-25 | 2010-04-28 | Dyson Technology Ltd | Fan with a filter |
| CN201807935U (en) * | 2010-10-21 | 2011-04-27 | 青海一机数控机床有限责任公司 | Constant-temperature lead screw |
-
2011
- 2011-06-01 CN CN2011101511689A patent/CN102398188A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08118199A (en) * | 1994-10-24 | 1996-05-14 | Makino Milling Mach Co Ltd | Feeder for machine tool |
| JP2000074173A (en) * | 1998-08-27 | 2000-03-07 | Niigata Eng Co Ltd | Feed screw cooling device |
| CN1773146A (en) * | 2004-10-15 | 2006-05-17 | 斗山英维高株式会社 | Cooling device for ball screw assembly |
| JP2006300126A (en) * | 2005-04-18 | 2006-11-02 | Nsk Ltd | Ball screw device and transfer device |
| KR20070068720A (en) * | 2005-12-27 | 2007-07-02 | 두산인프라코어 주식회사 | Ball screw cooling and chip removing device |
| GB2464736A (en) * | 2008-10-25 | 2010-04-28 | Dyson Technology Ltd | Fan with a filter |
| CN201807935U (en) * | 2010-10-21 | 2011-04-27 | 青海一机数控机床有限责任公司 | Constant-temperature lead screw |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103009170A (en) * | 2012-12-19 | 2013-04-03 | 杭州三拓精密机械有限公司 | Air cooling mechanism for screw rod |
| CN107263205A (en) * | 2017-08-10 | 2017-10-20 | 杭州电子科技大学 | A kind of outer cooling system of machine tool ball screw gas and its installation and cooling means |
| CN107263205B (en) * | 2017-08-10 | 2023-04-18 | 杭州电子科技大学 | Air external cooling system for ball screw of machine tool and mounting and cooling method thereof |
| CN107725747A (en) * | 2017-10-13 | 2018-02-23 | 北京工业大学 | A kind of ball screw assembly, based on the compensation thermal deformation of small-sized refrigerator principle |
| CN110315842A (en) * | 2019-06-25 | 2019-10-11 | 北新集团建材股份有限公司 | A kind of galley automatic deviation rectifying device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101564770B (en) | High-speed electric main shaft device for lubricating hydrodynamic and hydrostatic bearings by adopting water | |
| CN102398188A (en) | Hollow ball-screw gas-liquid binary cooling system | |
| CN100575816C (en) | Outer circulation dissipation type air wave refrigerating device | |
| CN109623461B (en) | Heat dissipation method and device and ball screw feeding system with device | |
| CN105798701A (en) | High-speed and high-precision electric main shaft based on pulsation heat pipe cooling structure | |
| CN105626838B (en) | A kind of adjustable for height gearbox support structure in axle center | |
| CN104107782A (en) | Pneumatically driven thermal insulation wax injection gun | |
| CN201807935U (en) | Constant-temperature lead screw | |
| CN113623386B (en) | Worm gear reducer | |
| CN116944324B (en) | Spinning device for processing metal cylindrical part | |
| CN201613474U (en) | High-speed feeding system used for numerical control machine tool | |
| CN202361883U (en) | Online cleaning device for heat exchange tube of condenser | |
| CN103419350B (en) | A kind of plastic pipe die chiller of continuous cycle operation | |
| CN102748386B (en) | Novel roller guide | |
| CN111404305B (en) | New energy automobile motor end cover and bearing room structure | |
| CN202790101U (en) | Novel roller guide | |
| CN101961843A (en) | Spindle cooling device | |
| CN204664341U (en) | A kind of Novel hydraulic coupling equipment | |
| CN210451818U (en) | Electric spindle pipeline layout system | |
| CN202690934U (en) | Ball screw | |
| CN203390646U (en) | Inner deep hole machining hydraulic chip removal device | |
| CN107160236A (en) | A kind of electro spindle based on rotating shaft end face impinging cooling | |
| CN103522119B (en) | A kind of oil cooling sealing device of rotary guide sleeve | |
| CN112935926B (en) | Screw rod transmission mechanism for machine tool | |
| CN215432711U (en) | Screw rod transmission mechanism for machine tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120404 |